CA976225A - Photocopying apparatus - Google Patents

Photocopying apparatus

Info

Publication number
CA976225A
CA976225A CA087,931A CA87931A CA976225A CA 976225 A CA976225 A CA 976225A CA 87931 A CA87931 A CA 87931A CA 976225 A CA976225 A CA 976225A
Authority
CA
Canada
Prior art keywords
photocopying apparatus
photocopying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA087,931A
Inventor
Wilhelm J. Knechtel
Detlef Schaffer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of CA976225A publication Critical patent/CA976225A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/522—Projection optics
    • G03B27/523—Projection optics for full time exposure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Facsimile Scanning Arrangements (AREA)
CA087,931A 1969-07-14 1970-07-10 Photocopying apparatus Expired CA976225A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691935618 DE1935618A1 (en) 1969-07-14 1969-07-14 Photocopier

Publications (1)

Publication Number Publication Date
CA976225A true CA976225A (en) 1975-10-14

Family

ID=5739737

Family Applications (1)

Application Number Title Priority Date Filing Date
CA087,931A Expired CA976225A (en) 1969-07-14 1970-07-10 Photocopying apparatus

Country Status (3)

Country Link
CA (1) CA976225A (en)
DE (1) DE1935618A1 (en)
GB (1) GB1323581A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014345B2 (en) * 1974-12-25 1985-04-12 株式会社リコー Variable magnification slit exposure method in electronic copying machine
GB1525218A (en) * 1976-09-07 1978-09-20 Ibm Electrophotographic copying machine
US4105327A (en) * 1976-12-09 1978-08-08 International Business Machines Corporation Multiple reduction indicators for continuously variable reduction copier machines
DE2857767C2 (en) * 1977-04-19 1988-09-29 Canon K.K., Tokio/Tokyo, Jp
US4243312A (en) * 1977-10-11 1981-01-06 Minolta Camera Kabushiki Kaisha Electrophotographic copying apparatus
JPS57179808A (en) * 1981-04-30 1982-11-05 Fuji Xerox Co Ltd Back focus adjusting device for lens of optical system

Also Published As

Publication number Publication date
GB1323581A (en) 1973-07-18
DE1935618A1 (en) 1971-02-04

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